Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/02/2024, 09:17

General

  • Target

    a17e68df0571d9c5eb1d50128f988fd2.exe

  • Size

    3.6MB

  • MD5

    a17e68df0571d9c5eb1d50128f988fd2

  • SHA1

    140b2ff127d66780354d26e14979aeec7d31b6f0

  • SHA256

    50abd0bacda330273a8fbdeef6b0d1dccf84dfa87f8a403e551f4666ab0a6d55

  • SHA512

    3937d5fdb35cc3a7c5d740d879f997356ff38b28f59e41ba59c3b43fe58f103d365827fccaedd730502b6ac1a4413af40f2fb9383e6b19d0dbb6765b42e7b29f

  • SSDEEP

    49152:ZoaXc7qLlg3Q9st37y7CZz/Yx0xmwhYmK0/t9YbAaenmuevXo:Z7I

Malware Config

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • NSIS installer 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a17e68df0571d9c5eb1d50128f988fd2.exe
    "C:\Users\Admin\AppData\Local\Temp\a17e68df0571d9c5eb1d50128f988fd2.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4636
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
      C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2312
    • C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe
      "C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      PID:1280

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\nsy19EE.tmp\FindProcDLL.dll

    Filesize

    3KB

    MD5

    8614c450637267afacad1645e23ba24a

    SHA1

    e7b7b09b5bbc13e910aa36316d9cc5fc5d4dcdc2

    SHA256

    0fa04f06a6de18d316832086891e9c23ae606d7784d5d5676385839b21ca2758

    SHA512

    af46cd679097584ff9a1d894a729b6397f4b3af17dff3e6f07bef257bc7e48ffa341d82daf298616cd5df1450fc5ab7435cacb70f27302b6db193f01a9f8391b

  • C:\Users\Admin\AppData\Local\Temp\nsy19EE.tmp\System.dll

    Filesize

    11KB

    MD5

    c17103ae9072a06da581dec998343fc1

    SHA1

    b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

    SHA256

    dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

    SHA512

    d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

  • C:\Users\Admin\AppData\Local\Temp\nsy19EE.tmp\nsDialogs.dll

    Filesize

    9KB

    MD5

    c10e04dd4ad4277d5adc951bb331c777

    SHA1

    b1e30808198a3ae6d6d1cca62df8893dc2a7ad43

    SHA256

    e31ad6c6e82e603378cb6b80e67d0e0dcd9cf384e1199ac5a65cb4935680021a

    SHA512

    853a5564bf751d40484ea482444c6958457cb4a17fb973cf870f03f201b8b2643be41bccde00f6b2026dc0c3d113e6481b0dc4c7b0f3ae7966d38c92c6b5862e

  • C:\Users\Admin\AppData\Local\Temp\rarebot-installer.exe

    Filesize

    1.1MB

    MD5

    b6838889d5af2a20c4786f93aa007ee0

    SHA1

    655c6869c824676aa3c44c783daced735798f9da

    SHA256

    99f686c9c12c8ad5367998e4d3d850171c31b43901f1ac22d7744aa7cfadb231

    SHA512

    1222a035f9c38b6bfb487e262e7e6b23486a3090096e75fc03640cc1a1af8c02df9c1f380d8de5a6e3f0839d091468e27193df0a7e29282c3e5286aad84511a1

  • memory/1280-29-0x0000000010000000-0x0000000010003000-memory.dmp

    Filesize

    12KB

  • memory/2312-53-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2312-50-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2312-8-0x00000000024E0000-0x00000000024E1000-memory.dmp

    Filesize

    4KB

  • memory/2312-9-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2312-10-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2312-11-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2312-6-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2312-4-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2312-3-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2312-62-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2312-61-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2312-60-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2312-49-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2312-7-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2312-51-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2312-52-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2312-59-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2312-54-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2312-55-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2312-56-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2312-57-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/2312-58-0x0000000000400000-0x00000000004AF000-memory.dmp

    Filesize

    700KB

  • memory/4636-0-0x0000000074890000-0x0000000074E41000-memory.dmp

    Filesize

    5.7MB

  • memory/4636-2-0x00000000012E0000-0x00000000012F0000-memory.dmp

    Filesize

    64KB

  • memory/4636-1-0x0000000074890000-0x0000000074E41000-memory.dmp

    Filesize

    5.7MB

  • memory/4636-30-0x0000000074890000-0x0000000074E41000-memory.dmp

    Filesize

    5.7MB